<?xml version="1.0" encoding="utf-8"?>
<Message>
    <Header>
        <UnstructuredHeaderField name="MIME-Version">1.0</UnstructuredHeaderField>
        <ParameterizedHeaderField name="Content-Type" value="message/rfc822" />
        <AddressListHeaderField name="From">
            <Address displayName="">whoever@what.com</Address>
        </AddressListHeaderField>
        <AddressListHeaderField name="To">
            <Address displayName="">someone@where.com</Address>
        </AddressListHeaderField>
        <UnstructuredHeaderField name="Subject">Some Subject</UnstructuredHeaderField>
    </Header>
    <MessageBody subtype="rfc822">
        <Message>
            <Header>
                <UnstructuredHeaderField name="MIME-Version">1.0</UnstructuredHeaderField>
                <ParameterizedHeaderField name="Content-Type" value="text/plain">
                    <Parameter name="charset">us-ascii</Parameter>
                </ParameterizedHeaderField>
                <AddressListHeaderField name="From">
                    <Address displayName="">someone@what.com</Address>
                </AddressListHeaderField>
                <AddressListHeaderField name="To">
                    <Address displayName="">someoneelse@where.com</Address>
                </AddressListHeaderField>
                <UnstructuredHeaderField name="Subject">Another Subject</UnstructuredHeaderField>
            </Header>
        </Message>
    </MessageBody>
</Message>